A patient simulator system for teaching patient care is provided. The system includes a patient simulator. The patient simulator includes a patient body comprising one or more simulated body portions. The one or more simulated body portions include a lung compliance simulation system in some instances. In that regard, the lung compliance system is configured to be used with an external ventilator, including positive end-expiratory pressure (PEEP) and assisted-control ventilation. In some instances, the lung compliance system includes a lung compartment, a simulated lung positioned within the lung compartment, where the lung compartment defines an available volume for the simulated lung to expand into and where the available volume for the simulated lung to expand into is adjustable to control a compliance of the simulated lung.